Railway-car underframe



W. P. MURPHY.

RAILWAY CAR UNDERFRAME. APPLICATION FILED AUG.3. 1916- Patented July 27, 1920.

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W. P. MURPHY. RAILWAY CAR UNDERFRAME. APPLICATION FILED AUG.3, 191s.

Patented July 27, 1920;

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W. P. MURPHY.

RAILWAY CAR UNDERFRAME. APPLICATION FILED AUG.3. 1916.

1,347,963. Patented July 27, 1920.

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ject to lateral stresses tending to break UNITED sures WALTER P. MURPHZ, or 'oirroneo, ILLINOIS.

' RAILWAY-CAB oiwDERFR-AME.

, Specification of Letters Yatent.

Patented July'27,'1920.

Application filed lugust 3, 1916. Serial No. 112,889.

To all whom it may concern: 1

Be it known that I, \VALTER P.- MURPHY, a citizen of the United States, residing at Chicago, in the county of'Cook and State of Illinois, have invented certain new and useful Improvements: in Railway-Car Underfra'mes, of which the following isa specification.

My invention relates to certain improvements in the construction of underframes for railway cars, more particularly freight cars.

The draft arms of railway cars are subthem or tear them from their attachments. For example, the pressures and stresses against the follower plates'of the draft riggingare likely to cause these parts to become bent to a greater or less extent. If bent to any appreciable extent the follower plates have a wedging action against the cheek castings tending to spread the same, therebyexerting a lateral Stress upon the draft arms.

It is one of the objects of my invention to provide a draft arm of novel and improved construction, which can be used either on new cars or in the repair of old cars, more particularly cars having wooden 'uiider frames, and which will be light in weight, relatively inexpensive to mantifa'ctu're and at same time extremely strong and rigid so as to be capable of withstanding the lateral stresses above mentioned, also the vertical stresses resulting from the up and down movements of the couplers and such longitudinal thrusts as the draft sill must take under the bufiing movements of the coupler.

A further object of the invention is to provide an improved metal reinforcement for the center sills of a freight'car having an under frame of wood construction, which will effectually prevent the sills from being broken, injured or loosened from their attachment to the car by the inertia shocks and other destructive forces'to which'these members are subjected when the car is in serv ice, and will furnish a rigid structure to which the draft arms may beattached The invention consists in the novel constructions, arrangementsand devices to be hereinafter described and claimed, for carrying out the above stated objects, together with other improvements relating to the construction of railway car under frames which will be referred to in the following description.

The invention is illustrated in certain preferred embodiments in the accompanying drawings, wherein Figure 1 is a plan view of a portion of the under frame and draft rigging of a railway car of wood construction illustratlng one form of the invention but with certain parts omitted for the purpose of mak ing more clear the illustration of other features.

Fig. 2 is a broken longitudinal sectional view of this embodiment of the invention, showing the partsomitted from Fig. 1, but omitting the coupler draw bar, follower plates and cheek castings.

Fig. 3 is a cross-sectional view on line 33 of Fig. 2.

Fig. l is a view, in perspective, of one of the cheek castings.

Fig. 5 is a'longitudmal sectional perspective of the parts shown in Fig. 3.

Fig. 6 is a view, in perspective, of oneof the attaching angles used in the construction shown in the preceding figures.

Fig. 7 is a similar view of a brace for the car bolster.

Fig. is a plan view of a modification.

- Fig. 9 is a longitudinal sectional View taken on line 9-9 of Fig. 8.

Figs. 10 and 11 are cross-sectional views on lines 101O and 1111, respectively, of

Fig. 12 is a plan view of another modification. Fig. 13 is a longitudinal sectional view on line 1813 of 12.

Figs. 14 and 15 are cross-sectional views on lines 14 14 and 15-15, respectively, of

Fig. 16 is a sectional view on line 1616 of Fig. 14;

Like characters of reference designate like parts in the several figures of the drawings.

Referring first to Figs. 1 to 7, inclusive, which show fragmentarily the end of the under frame of a railway car constructed,

largely of wood, with one form of my invention applied thereto, 25 designates the end sill of the car, 26, 26 the center sills, 27

the deadwood, preferably provided with a striking plate 28, 29 the flooring of the car, and 30 a steel end, the lower edge of which gations 37.

'useon railroad cars.

a coupler draw bar, 34 the yoke or spring casing, and 35, 35 follower plates. It will be understood that the, draft rigging forms.

no part of my invention.

.F or the purpose of completely illustrating my invention I have shown a form of draft rigging of familiar type in place be tween the draft-arms; This device will not require description in detail and it will be understood that the constructions and arrangements constituting my invention are adaptable, with possible slight modifications wellwithin the scope of ordinary mechanical skill, to'any of the draft riggingnowin It will also be understood thatdetails of construction of the parts of the under frame above referred to might be modified without departure from the invention which is adaptable to various types of under frame. 7

Instead of the wood or cast steel draft arms heretofore employed, I provide a pair of pressed steel draft arms 36, 36 formed with longitudinally extending corrugations 37 and preferably with outturned stiffening flanges 38 at their lower edges to which are secured the usual carry iron 39-and tie plate 40. Secured to the draft arms are cheek castings 41 (Fig. 4) consisting, in each case, of a longitudinally. disposed plate 42 and a transversely disposed plate 43 against which thefollower plate 35 of the draft rigging bears. The plate 43 is formed with curved projections 44 which enter into the corrugations 37 of the draft arm. 45, 45 are stiffening webs on the inner sides of plate 42 and 46 are similar webs on the outer sides of the casting, the latter webs lying within corru- Preferably the draft arms are formed with horizontally extending portions 47 which lie flatwise against the under sides of the center sills 26 and are secured thereto by bolts 48.. The draft arms are also provided, preferably, with extensions 49 offset from the lower portions of the draft arms, formed preferably with longitudinally extending corrugations 50 and secured to the inner sides of center sills 26 by bolts 51. This arrangement gives the draft arms very firm and reliable anchorage and also serves to reinforce the center ,sills against their tendency to buckle out under the inertia shocks which the under frame of a car receives in service. To further reinforce and strengthen thecenter SlllS a channel-shaped member 52,

formed with longitudinal corrugations 53,

is disposed in inverted arrangement between the center sills 26 and secured to the sills by the bolts 51. Preferably a corrugated plate 54 is riveted to the channel member 52 above end of the car.

the body bolster 32. It will be seen that the upper portions of the draft 'arms,'taken in conjunction with the member 52, provide a hollow truss or reinforcement for the center sills which will keep them in line and prevent them from being broken or torn from their attachments.

p The inner ends of the draft arms 36 are secured to the body bolster by angle plates 55. The-outer ends of the draft arms are secured by angle plates 56 (Fig. 6) to the under sides of the endsill 25 and dead wood 27. 57 are angles which limit the opening through which the coupler draw bar passes. In order to brace the body bolster and further reinforce thecenter sills I provide bracing members 58 (Fig. 7) secured to the centersills and formed with projections 59 bearing against the web of the bolster and attached thereto by angles 60. The lower Figs. 8 to 11, inclusive, show a 1nodification in which the center still reinforcement, different in construction from that shown in the preceding figures, extends from end to This reinforcing structure consists of channel bars 64, 65 arranged with their flanges directed toward each other and having their center webs formed with channels or corrugations 66, the corrugation of one member being secured to that of the other by rivets 67. The draftarms 68 are formed with offsets 69 lying against the under sides of the center sills 70 and with upwardly projecting webs 71 to which the flanges of therchannel members 64, 65 are riveted, the webs-71' being secured to the center sills'by bolts 72. Preferably the angle bars 73 are arranged along the under sides of the center sills. These-angle bars are secured to the sills by bolts 7 4 and to the draft armsby rivets 75. v I

In order to prevent the reinforcing structure 64, 65 from spreading, tie plates '76 are provided at intervals along the top of the channel member 64 and along the bottom of the channel member 65 (Figs. 9 and 11). The draft arms are secured by angles 77 to the bolsters 78 and at their outer ends by angle plates 79 to the end sillSO. The bolster may be braced on the other sideof the draft arms by bracing plates 81 secured to the channel members 64, 65 by rivets 82,- and to point at the other end of the car. The draft arms 87 are secured at their inner extremities S8 to the H-beam Set, their outer extremities being attached to the end sill 89 by angle plates 90 and bolts 91. The intervening upper edges of the draft arms are secured to the center sills 85 by means of angle bars 92, which latter are attached to the center sills by bolts 93. The channel bars 9st forming the bolster are secured to the vertical webs 95 of the H-beam by means of angles 96, the plates 9T, 97 being arranged above and below the H-beam with their extremities riveted at 98 to the bolster channels 94. In the construction shown in Figs. 8 to 16, inclusive, the buffing and pulling shocks received by the'dr'aft arms are transmitted to a metal member which extends from one pair of arms to the other lengthwise of the car, the center sills being entirely relieved of the draft stresses so that their only function is to support the floor of the car and its load. lVhile I have described my invention in certain preferred embodiments, it will be understood that modifications in the details of construction and arrangement might be made without departure from the invention; Therefore I do not wish to be understood as limiting the invention to the precise constructions' and arrangements shown except so far as certain of the claims are specifically so limited.

I claim:

1. In combination with the other elements of the under frame of a railway car, of a draft armformed of a steel plate having pressed therein a longitudinal corrugation which extends substantially the entire length thereof.

2. In combination with the other elements of the under frame of a railway ear, of a draft arm formed of a steel plate having pressed therein a longitudinal corrugation which extends substantially the entire length thereof, and provided at its lower edge with an outturnedhorizontal flange.

3. In combination with theotlier elements of the under frame of a railway car, 'of a draft arm formed of a steel plate having pressed therein a longitudinally extending corrugation, and cheek plates attached thereto formed with projecting parts which er:-

tend into said corrugation.

4:. In combination with the other elements of the under frame of a railway car, of a draft arm formed of a steel plate having pressed therein a longitudinally extending corrugation, and cheek plates attached thereto having curved projections to fit said corrugation, and longitudinal strengthening webs which lie within said corrugation.

5. In combination with the other elements of the under frame of a railway car, of a. draft arm formed of a steel plate having pressed therein a longitudinal corrugation extending substantially the entire length arms to the 'bolster.-

thereof, provided at its lower edge with an outturned horizontal flange, and a carry iron and tie plate secured to said'fiange."

6. In combination with the other elements of the under frame of a railway car, a sheet metal draft arm formed with longitudinal corrugations, and cheek plates providedeach with a transversely arranged member 7 for the draft gear follower to=abut against which are formed with longitudinal Webs lying within said corrugations.

7. In combination with 'the center sills of a railway car, of a pair of sheet metal draft arms longitudinally corrugated and arranged undersaid center sills and formed with inwardly projectin offsets which overlap and are secured t'o't e inner sides of the center sills. f

8. In combination with the end sill and center-sills of a railway car, of apair of sheet metal draft arms longitudinallycorrugated, arranged under said center sills" and formed with inwardly projecting offsets which overlap and'are secured to the inner sides o'f the center sills, and angle plates for attaching said draft arms to the end sill.

9. In combination Wltlltll center sills and bolster of a railway car under frame, of a pair of sheet metal draft arms longitudinally corrugated and arranged under said center sills and formed with inwardly projecting offsets which overlap and are secured to the inner sides of said center sills, and angle plates for attaching said draft 10. Incombination with the center sills and bolster-of a railway car under frameyof a pair of sheet metal draft arms-arranged under said center sills and formed with longitudinal corrugations which extend substantially the full length of said arm, and angle plates for attaching said draft arms to the bolster.

11. In'combination with the center sills, end sill and bolster of a railway car under frame, of sheet metal longitudinally corrugated draft arms'arranged. under and secured to-the center sills with inwardly projecting offsets overlapping and secured to the inner sldes of sald center sills, and a metal reinforcing member ex-tending lengthwise between and attached "to said center sills.

' 1.2.In combination with the center sills,

end sill. and bolster of a railway car under frame, of sheet metal longitudinally corrugated draft arms arranged under and secured to the center sills with inwardly projecting offsets overlapping and secured to the inner sides of said center sills, and a metal, channel-shaped reinforcing member extending lengthwise between and attached to said center sills.

13. The combination with the center sills, end sill and bolster of a car under frame, of

longitudinally corrugated pressed steel draft arms arranged under the center sills and attached at opposite ends to the body bolster and end sill, said draft arms provided with extensions overlapping the inner sides of the center sills andformed with longitudinal corrugations, 'cheekcastings secured to the draft armsand formed .to fit the corrugations thereof, and a channel-shaped corrugated reinforcing member arranged between the center sills, the flanges of which are overlapped upon and secured to said center sills through'the extensions of said draft arms;

7 14. The combination with the center sills V of a. car under frame of wood construction,

of a metal reinforcing structure which extends lengthwise of the car between and secured to said center sills and formed with a corrugation pressed therein'to rigidify said structure against lateral deflection. 15. The combination with the center sills of 'a-car under frame of wood construction,

of a hollow metal reinforcing structure which extends lengthwise ofthe car. be: tween and secured to said center sills, and comprises a channel-shaped member formed with a longitudinal corrugation pressed therein to-rigidify 'said channel shaped member against lateral deflection.

16. The combination with the center sills of a carunder frame of wood construction, of a hollow metal reinforcing structure which extendslengthwise of the car between .and secured to said center sills, comprising gether, and tie strips attaching said channel members to each other; and draft arms secured to said reinforcing structure.

18. The'combination with the center sills of a railway car under frame; of a reinforcing structure extending lengthwise between and secured to saidcenter sills. comprising two channel members with their flanges turned toward each other and formed with longitudinal corrugations inturned one toward the other and riveted together, and tie 'strips attaching said channel members to 'ments of the under frame of a railway car,

of a draft arm formed of a steel plate having pressed therein a longitudinally extending corrugation, and cheek plates attached tosaid draft arm formed withflongitudinally disposed strengthening webs which lie'within said corrugation. 4

20. The combination with the wood center sills of a railway car, of a steel, reinforcing structure arrangedbetween and secured to said center sills and formed with a longitudinally pressedcorrugation adapted to re inforce said structure against deflection from its normal plane.

21. The combination with, the wood center sills of a railway car, of a steel, reinforcing structure arranged between and secured to said center sills and formed with a pressed longitudinally extending corrugation to reinforce said structure against transverse strains, and pressed steel, longitudinally'cor- -rugated draft arms secured to said sills and reinforcing structure; s.

r 22. The combination with the woodcenter sills of a-railway' car, of a steel reinforcing structure arranged between and secured to said center sills, and'formed with a pressed longitudinally extending corrugation to reinforce said structure against transverse strains, and meta'l'draft arms secured to said sills and reinforcing structure. V j

23. The combination withthe wood cen ter sills of ,a railway car, of a metal reinforcing element extending longitudinally of and secured to said center sills, and formed with a pressed longitudinally extending corrugation to reinforce said structure against transverse-strains, and metal draft arms provided with longitudinal corrugations and secured to said reinforcing element and centersills. j 24:. In combination with the underframe of a railway car, a pressed steel draft sill formed with longitudinalcorrugations, and cheek plates secured to said corrugations so as to .provide' in effect restrained beams which reinforce the said draft sill soas to withstand lateral deflections from the stresses imposed thereon by the draw bar.

WALTER P. MURPHY. 

